Burner



May 30, 1933. D. L. BLATTER BURNER Filed Sept. 12, 1927 R. & m n m m L mw m .r j Z w I F B M 7 Y B 2 ,5 2

2 m F U Patented May 30, 1933 UNITED STATES "PATENT OFFICE .DGNALD 1..BLATTER, or ERIE, PENNSYLVANIA, Assreivon TOIERIE CITY more worms, 1

OF ERIE, PEITNSYLVANIA, A CORFOB'ATION OF PENNSYLVANIA BURNERAppi'oation filed September 12, 192-7. Serial No. 219,046.

In burning certain classes of fuel, such as pulverized coal, the fuel isusually delivered to the furnace, using air, commonly referred to asprimary air, as the vehicle for delivery. It is usual to add to thisprlmary air, auxiliary air or supplemental air, in quantities sufficientto complete combustion. Where the fuel is delivered in a single jet, orstream, the combustion can only be completed upon-the penetration of theair from the outer periphery of the stream to the center and as thestream is enlarged the completion of combustion is delayed. The presentinvention is designed to accelerate the combustion by dividing thedelivery of fuel in a stream having diverging portions so that thecombustion may be more rapidly completed. I further desire in suchdivision to give to the air a certain amount of turbulence. Features anddetails of the invention will appear from the specification and claims.A preferred embodiment of the invention is illustrated in theaccompanying drawing as follows Fig. 1 shows an end view of the burner.Fig. 2 a plan view of the burner as ordinarily installed.

Fig. 3 a section on the line 33 in Fig. 2. 1 marks the burner dischargepassage or nozzle ordinarily formed in the end of the delivery pipe.This nozzle is elongated.

Deflector plates 2 are secured at their rear ends. That is to say, theends opposite the direction of discharge. They are arranged on oppositesides of the burner nozzle in staggered or alternate relation, thedeflector plates along one edge of the burner nozzle being spaced withrelation to the deflector plates on the opposite edge of the nozzle andordinarily adjusted so that the plates are in interlayed relation. Thesedeflectors break the flow of fuel into the divergent streams,

the extent of the separation being dependent to a large degree on theadjustment of the deflector plates.

The deflector plates are formed with cooling passages 3 which are in theform of U- bends and the supporting ends of the deflectors are connectedby pipe nipples 4, these 59 pipe nipples connecting with the passages 3.The various nipples are supported by left, as shown in Fig. 1. The otherend of 1 the deflector system is conuectedby a nipple 12 with adischarge pipe 13. Through this system water is circulated through eachdeflector, the deflectors operating as a series, so that one supply andone discharge pipe take care of the whole system. The nipples alsoafford a means by which the deflectors may be swung to any angle thatmay be desired to spread the streams of fuel to conform to the furnacerequirements. 1

Fuel is delivered through the main'pipe of the burner striking thedeflector plates and is deflected forming a stream with divergingportions. Thus the exposed surfaces of the portions are increased overthat of a stream without such diverging portions and the depth from thesurfaces to the center of the streams decreased over that of a streamwithout such diverging portions. As a consequence the supplemental. aircompletes the combustion in a much shorter period than where the fuel isdelivered in one stream. Thus the flame is materially shortened andpermits of the use chamber.

While I have shownthe burner arranged horizontally it will be understoodthat this may be arranged from any point of delivery that may conform tothe requirements of the particular furnace chamber, or conditions ofdelivery of fuel. 1 I i What I claim asnew is I 1. A burner comprising anozzle adapted to discharge a stream of pulverized fuel and air, saidnozzle having walls arranged at its discharge end to form an oblongoutlet with the bounding edges of opposing walls thereof substantiallyparallel; and deflector plates mounted on each of said opposing edges,said I plates on each edge'being arranged with of a smaller furnacespaces therebetween, the width of which spaces is slightly greater thanthe width of the deflector plates, thedeflector plates on one edge beingstaggered with respect to those on the other and oppositely inclined tothe path of the discharge from the nozzle to form a discharge streamwith diverging portions.

2. A burner comprising a nozzle adapted to discharge a stream ofpulverized fuel and air, said nozzle having walls arranged at itsdischarge end to form an oblong outlet with the bounding edges of theopposing walls thereof substantially parallel and deflector platesmounted for swinging adjustment on each of said edges, said deflectorplates on each edge being arranged with spaces therebetween, the widthof which spaces is slightly greater than the width of the deflectorplates, the deflector plates on one edge being staggered with respect tothose on the other and of such length that those on opposite edges canbe swung into interleaved relations, in the path of discharge from thenozzle. I

3. A burner comprising a nozzle adapted to discharge a stream ofpulverized fuel and air, said nozzle having walls arranged at itsdischarge end to form an oblong outlet with I the bounding edges ofopposing walls thereof substantially parallel; and deflector platesmounted on each of said opposing edges, said plates on each edge beingarranged with spaces therebetween, the width of which spaces is slightlygreater than the'width of the deflector plates, the deflector plates onone edge being staggered with respect to those on the other andoppositely inclined to the path of the discharge from the nozzle to forma discharge stream with diverging portions,

7 livering air and fine fuel to the nozzle.

4. A burner comprising a nozzle adapted to discharge a stream ofpulverized fuel and air, said nozzle having walls arranged at itsdischarge end to form an oblong outlet with the bounding edges of' theopposing walls thereof substantially parallel, and deflector platesmounted for swinging adjustment of each of said edges, said deflectorplates on each edge being arranged with spaces therebetween, the widthof which spaces is slightly greater than the width of the deflectorplates, the deflector plates on one edge being staggered with respect tothose on the other 7 and of such length that those on opposite edges canbe swung into interleaved relations, in the path of discharge from thenozzle, in combination with means for delivering air and fine fuel tothe nozzle.

In testimony whereof I'have hereunto set my hand. V

DONALD L. BLATTER.

in combination with means for de-. y

